what is the size difference between the...
what is the size difference between the the medium and the large?
According to GoLite.com the medium fits a torso size of 17.5"-19.5" and the Large Fits 19.5"-21.5". There is detailed information on how to measure your spine at: http://www.golite.com/Product/ProdDetail.aspx?p=150001111&mc=&t=&lat= Hope that helps!! Pack on!